Chairman of the Joint Chiefs of Staff Gen. Joseph Dunford said Monday that the US military will not be "involved in the actual mission of denying people entry to the United States."
US Secretary of Defense James Mattis made an unexpected trip to Afghanistan Friday, his visit coming as the US tries to make headway in the country after 17 years of war.
Secretary of Defense James Mattis criticized Turkey for its "authoritarian drift" and its record on human rights but still wants the NATO ally to receive the F-35 Joint Strike Fighter, according to a letter to a senior lawmaker on Capitol Hill.
US Secretary of Defense James Mattis is open to talks with his Russian counterpart, Sergei Shoigu, but there are currently no plans for such a conversation, a US defense official tells CNN.
China will not give up "any inch of territory" in the Pacific Ocean, President Xi Jinping told US Defense Secretary James Mattis Wednesday during a visit to Beijing.
President Donald Trump's top military adviser is making an unannounced trip to Helsinki, Finland, for sensitive face to face discussions with his Russian counterpart.
US Defense Secretary James Mattis said on Tuesday that the United States will continue "a steady drumbeat" of naval exercises to challenge China's territorial claims in the South China Sea, amid Beijing's militarization of the contested waters.
US Secretary of Defense James Mattis said Friday that there is more optimism than ever before when it comes to dealing with North Korea.
President Donald Trump quashed Defense Secretary James Mattis' suggestion to obtain congressional authorization ahead of last week's strikes in Syria, military and administration officials told The New York Times.
The US, UK and France coordinated to launch strikes against targets within Syria in response to an alleged chemical weapons attack by the regime of President Bashar al-Assad.
After nearly a week of tension that sometimes verged on the surreal, the US and its allies finally carried out strikes against regime targets in Syria on Friday night. The strikes, more limited than once seemed likely, were designed to deter the Assad regime's use of chemical weapons once and for all.
Defense Secretary James Mattis decided Thursday that the best way to break the ice during his first ever meeting with President Donald Trump's new national security adviser John Bolton was with a joke.
Secretary of Defense James Mattis fired two top Guantanamo Bay officials on Monday over a "loss of confidence," a senior defense official tells CNN.
The US Defense Department was forced to correct several mistakes in its Nuclear Posture Review after an initial version of the report released last week labeled Taiwan as part of China and included the disputed Kuril islands in a chart depicting Russia.
Defense Secretary Jim Mattis has called on Turkey to show restraint in its military incursion in northern Syria, warning that violence on the border could create a vacuum for ISIS and Al Qaeda militants, Reuters reports.
Secretary of Defense James Mattis said Friday he does not believe that North Korea's current intercontinental ballistic missiles are capable of hitting the continental US.
